What's wrong with node.js server?

Question

Node.js

Good afternoon, I'm setting up a server on an Ubuntu 14.04 VM on Azure, and when I run the server.js file, I get an error:

Although when I run it on localhost at home. the system is fine.
Maybe it's in the nginx config?

server {
        listen 80;

        server_name localhost;

        location / {
                proxy_pass http://localhost:8080;
                # as directory, then fall back to displaying a 404.
                try_files $uri $uri/ =404;
                proxy_http_version 1.1;
                proxy_set_header Upgrade $http_upgrade;
                proxy_set_header Connection 'upgrade';
                proxy_set_header Host $host;
                proxy_cache_bypass $http_upgrade;
        }
}

When navigating through the IP, nginx gives up its page.
I'm new to this, don't get angry please))
What should I do here so that the server starts up normally?
I would be very grateful for any help )
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9000 - Throws: Error: listen EADDRINUSE

Answer 1

This means that some program has already taken the port you are trying to connect to. Either find and remove this program, or change the port on which server.js is running